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2. Water surface searches - Wikipedia

   en.wikipedia.org/wiki/Water_surface_searches

   Water surface searches are procedures carried out on or over the surface of a body of water with the purpose of finding lost vessels, persons, or floating objects, which may use one or more of a variety of search patterns depending on the target of the search, as the direction and rate of drift vary depending on the characteristics of the target and the water and weather conditions at the time.

3. Dive computer - Wikipedia

   en.wikipedia.org/wiki/Dive_computer

   The Canadian company CTF Systems Inc. then developed the XDC-2 or CyberDiver II (1980), which also used table lookup, and the XDC-3, also known as CyberDiverIII, which used microprocessors, measured cylinder pressure using a high-pressure hose, calculated tissue loadings using the Kidd-Stubbs model, and remaining no-stop time.

4. Underwater acoustic positioning system - Wikipedia

   en.wikipedia.org/wiki/Underwater_acoustic...

   Tracking or navigation operations. Following the baseline deployment and survey, the acoustic positioning system is ready for operations. In the long baseline example (see figure 1), an interrogator (A) is mounted on the ROV that is to be tracked. The interrogator transmits an acoustic signal that is received by the baseline transponders (B, C ...

5. Hose reel - Wikipedia

   en.wikipedia.org/wiki/Hose_reel

   A hose reel is a cylindrical spindle made of either metal, fiberglass, or plastic and is used for storing a hose. The most common styles of hose reels are spring driven (which is self retracting), hand crank, or motor driven. Hose reels are categorized by the diameter and length of the hose they hold, the pressure rating and the

6. Diver detection sonar - Wikipedia

   en.wikipedia.org/wiki/Diver_Detection_Sonar

   Diver detection sonar (DDS) systems are sonar and acoustic location systems employed underwater for the detection of divers and submerged swimmer delivery vehicles (SDVs). The purpose of this type of sonar system is to provide detection, tracking and classification information on underwater threats that could endanger property and lives.

7. Washdown - Wikipedia

   en.wikipedia.org/wiki/Washdown

   Generally, one person holds and aims the hose, though if the hose is longer than 300 feet then another person may be required to help move the hose itself. Water is typically squirted from the hose at a pressure of 300 psi. The hose itself can vary in length from 75 to 425 feet. Typically the hose when used by a single person is 300 feet long.